PM 111 digital pressure gauge and pressure transducer
with process connection (i.e. with a diaphragm chemical seal)
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4-digit LED display or
6-digit LCD display with backlighting
selectable pressure units (LCD)
analog output signal
memory of the MIN / MAX value
relay output: 1 to 4 independently adjustable
relays (together with LED signaling)
accuracy 0,5% FS and better
high overloading capacity and long-term
stability
various process connection options
special design for aggressive media
hot media design
sanitizable design (CIP)
ATEX 0309
Options:
• digital output RS 232, RS 485
• integrated data logger
• explosion-proof design (ATEX)
• pressure difference measurement (with the
use of an external TSZ-M sensor)
• powered from a built-in accumulator
• display with color backlighting
The basic structural element of the instrument is a
piezoresistive pressure sensor with a stainless-steel
isolating diaphragm. The use of a high-quality sensor is a
prerequisite for high accuracy, overloading capacity and
long-term stability of the instrument. The output signal of
the sensor is processed by a microprocessor. The status of
the relay is indicated on the panel with four LED’s.
The front panel of polycarbonate foil contains four buttons
that are used to program parameters of the pressure gauge
and switching functions; e.g.: beginning and end of the
measuring range, offset (tara), output signal, levels of
switching points and functions of individual relays
(switching on / off, switching differential, position of relays
in case of a failure, etc.), number of decimal places.
Main applications
The diaphragm chemical seal prevents the measured
fluid from entering the instrument. This is sometimes
necessary due to the following circumstances:
- It must be possible to completely clean the instrument of
residues of the measured product (CIP design CIP –
cleaning on place); this requirement is usual in the food
processing and pharmaceutical industry;
- The measured fluid would be solidifying, crystallizing or
making sediments (e.g. when sludge, paint and varnish,
adhesives, etc. are measured);
- The measured fluid is aggressive or abrasive while the
isolating diaphragm makes it possible for the wetted parts to
be made of special resistant materials (e.g. the most suitable
material that resists most aggressive acids is tantalum);
- The measured fluid is hot (e.g. melted asphalt and plastic
materials).
The body of the sensor and the process connection are
usually made of stainless steel.
The isolating diaphragm is either made of stainless steel or
of special materials: tantalum, nickel, special alloys (e.g.
Hastelloy C-276), or it may be coated PTFE layer or goldplated.
For measurement of high-temperature fluids (up to 400°C)
the set contains a cooling tower that reduces transmission
of heat to the instrument body.
Data logger
The instrument can be programmed to record values of
the measured pressure with the sampling interval from 5 s
to 24 hours. The capacity of the data logger memory is 13
thousand to 216 thousand records (depending on the size
of the installed memory).
Battery power supply
In the LCD version the pressure gauge can be supplied
from a built-in rechargeable battery; the battery is recharged
with a controlled charger.
PM 111-M
BHV senzory, Družstevní 20
CZ 252 68 Kněževes u Prahy
rev 1106
tel.: +420 / 220 920 253
fax: +420 / 220 922 036
e-mail: bhvsenzory@bhvsenzory.cz
http://www.bhvsenzory.cz
Specification
Pressure ranges:
Measurement type:
Accuracy:
Long-term stability:
Supply voltage:
Output signal:
Load driving capability:
Relay output
Trends
Operating temperature
range:
Electrical connection:
Seal rating:
0 … 6 kPa to 0 … 700 bar
Gauge pressure, absolute pressure, level measurement
0,5% FS for pressure range from 25 kPa, 1% FS for less
Option: 0,25% FS – depends on the range and the type of the seal
better than 0,15 % FS per a year
15 - 36 V DC (3-wire configuration, LED or LCD display)
8 - 28 V DC (2-wire configuration, only with LCD display)
2-wire: 4 … 20 mA (only with LCD display)
3-wire: 4 … 20 mA, 0 … 20 mA, 0 … 1 (5; 10) V .. etc. (alternative on request)
RS 232, RS 485 (9600 Bd)
2-wire configuration: Rz=(Usup – 8V) / Iout
3-wire configuration: Rz=(Usup – 3V) / Iout
Rz – load resistance [kΩ
Ω ], Usup - power supply voltage [V], Iout - output current [mA]
1 to 4 relay (The setpoints are free programmable by means of buttons on the front panel,
including hysteresis. The status of the relay is indicated by LED light.)
Rating: 5 A / 250 V AC,
5 A / 30 V DC, max. 150 V / 1 A
Increasing or degreasing of pressure is indicated by LED light (option)
Ambient: -20 to +70°C
Medium: -20 to +400°C
storage 5 to 40°C
K1 - mating socket with screw terminal connections to DIN 43650 (supply, analog output)
K2 - Amphenol CA 6 (relays)
K3 - socket for recharging (built-in accumulator)
K4 - Canon 9-pin (digital output)
IP 65
Process connection – chemical seal
Type C
Clamp (Tri-Clamp) connection in accordance with ISO
2582, ISO 1127, DIN32676 and DIN 11864
Type M
Food-processing screw union in accordance with DIN11851
Type F
Threaded pin with the diaphragm on the frontal area
Type P
Flush flange in accordance with EN 1092-1 or ANSI B 16,5
Type S
Sandwich design for counter-flange installation
Type Q
Semi flushed diaphragm in accordance with EN 1092-1 or
ANSI B 16,5
Type K
Internal diaphragm screwed type, with thread connection
Type W
Internal diaphragm with weld body, thread connection
Type Z
Flanges for the paper industry (FDP, IDBF, IDSF)
Alternative:
Special food-processing connections: Varivent®, NEUMO
Bio-Control®, DRD flange, APV flange, Finger type seal
Body material:
Diaphragm material:
Filling liquid:
Cool-tower
PN 40: DN 25, 32, 40
PN 25: DN 50, 65
PN 40: DN 25, 32, 40
PN 25: DN 50, 65
PN 600: G ½", ¾", 1", 1 ¼", 1 ½", 2"
PN 40: DN 25, 32, 40, 50, 65, 80
Class 150: ½", ¾", 1", 1 ½" , 2”
alternative PN or class on request
PN40: DN 50, 80
Class 150: ½", ¾", 1", 1 ½" , 2”
alternative PN or class on request
PN 40: DN 25, 32, 40, 50, 65, 80
Class 150: ½", ¾", 1", 1 ½" , 2”
alternative PN or class on request
PN 40: DN 70, 100
PN 40: DN 40, 50
PN 160: DN 40;
PN: DN 48
PN 600: DN 32
AISI 316L
PVDF (option for type K – bottom part)
AISI 316L, tantal, Hastelloy
Option: protection with coated PTFE cover
silicon oil, food-industry oil, high-temperature oil,
halocarbon
short, type A, up to 150°C
extended (capillary design), type B, up to 400°C
PM 111-M
BHV senzory, Družstevní 20
CZ 252 68 Kněževes u Prahy
rev 1106
tel.: +420 / 220 920 253
fax: +420 / 220 922 036
e-mail: bhvsenzory@bhvsenzory.cz
http://www.bhvsenzory.cz